package common;

import android.content.Context;
import android.content.res.TypedArray;
import android.text.Editable;
import android.text.TextWatcher;
import android.util.AttributeSet;
import android.util.TypedValue;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.LinearLayout;

import com.example.asus.jingdong.R;

public class ViewUtils extends LinearLayout implements View.OnClickListener, TextWatcher {

        private static final String TAG = "AmountView";
        private int amount = 1; //购买数量
        private int goods_storage = 1; //商品库存
        private String fuzhi;

    public String getFuzhi() {
        return fuzhi;
    }


    private OnAmountChangeListener mListener;

        private EditText etAmount;
        private Button btnDecrease;
        private Button btnIncrease;

        public ViewUtils(Context context) {
            this(context, null);
        }

        public ViewUtils(Context context, AttributeSet attrs) {
            super(context, attrs);

            LayoutInflater.from(context).inflate(R.layout.view, this);
            etAmount = (EditText) findViewById(R.id.etAmount);
            btnDecrease = (Button) findViewById(R.id.btnDecrease);
            btnIncrease = (Button) findViewById(R.id.btnIncrease);
            btnDecrease.setOnClickListener(this);
            btnIncrease.setOnClickListener(this);
            etAmount.addTextChangedListener(this);

            TypedArray obtainStyledAttributes = getContext().obtainStyledAttributes(attrs, R.styleable.AmountView);
            int btnWidth = obtainStyledAttributes.getDimensionPixelSize(R.styleable.AmountView_btnWidth, LayoutParams.WRAP_CONTENT);
            int tvWidth = obtainStyledAttributes.getDimensionPixelSize(R.styleable.AmountView_tvWidth, 80);
            int tvTextSize = obtainStyledAttributes.getDimensionPixelSize(R.styleable.AmountView_tvTextSize, 0);
            int btnTextSize = obtainStyledAttributes.getDimensionPixelSize(R.styleable.AmountView_btnTextSize, 0);
            obtainStyledAttributes.recycle();

            LayoutParams btnParams = new LayoutParams(btnWidth, LayoutParams.MATCH_PARENT);
            btnDecrease.setLayoutParams(btnParams);
            btnIncrease.setLayoutParams(btnParams);
            if (btnTextSize != 0) {
                btnDecrease.setTextSize(TypedValue.COMPLEX_UNIT_PX, btnTextSize);
                btnIncrease.setTextSize(TypedValue.COMPLEX_UNIT_PX, btnTextSize);
            }

            LayoutParams textParams = new LayoutParams(tvWidth, LayoutParams.MATCH_PARENT);
            etAmount.setLayoutParams(textParams);
            if (tvTextSize != 0) {
                etAmount.setTextSize(tvTextSize);
            }
        }

        public void setOnAmountChangeListener(OnAmountChangeListener onAmountChangeListener) {
            this.mListener = onAmountChangeListener;
        }

        public void setGoods_storage(int goods_storage,int n) {
            this.goods_storage = goods_storage;
            etAmount.setText(n+"");

        }

        @Override
        public void onClick(View v) {
            int i = v.getId();
            if (i == R.id.btnDecrease) {
                if (amount > 1) {
                    amount--;
                    etAmount.setText(amount + "");

                }
            } else if (i == R.id.btnIncrease) {
                if (amount < goods_storage) {
                    amount++;
                    etAmount.setText(amount + "");
                }
            }

            etAmount.clearFocus();

            if (mListener != null) {
                mListener.onAmountChange(this, amount);
            }
        }

        @Override
        public void beforeTextChanged(CharSequence s, int start, int count, int after) {

        }

        @Override
        public void onTextChanged(CharSequence s, int start, int before, int count) {

        }

        @Override
        public void afterTextChanged(Editable s) {
            if (s.toString().isEmpty())
                return;
            amount = Integer.valueOf(s.toString());
            if (amount > goods_storage) {
                etAmount.setText(goods_storage + "");
                return;
            }

            if (mListener != null) {
                mListener.onAmountChange(this, amount);
            }
        }


        public interface OnAmountChangeListener {
            void onAmountChange(View view, int amount);
        }

    }

